Grinding machine



FIG. 1 is a perspective view of a grinding machine in accordance with an embodiment of the present invention;

FIG. 2 is a top view of the grinding machine of FIG. 1 ;

FIG. 3 is a bottom view of the grinding machine of FIG. 1 ;

FIG. 4 is a left side view of the grinding machine of FIG. 1 ;

FIG. 5 is a right side view of the grinding machine of FIG. 1 ;

FIG. 6 is a front view of the grinding machine of FIG. 1 ; and,

FIG. 7 is a rear view of the grinding machine of FIG. 1 .

The broken lines of the grinding machine in FIGS. 1-7 form no part of the claimed design. 

CLAIM The ornamental design for the grinding machine, as shown and described. 